Which of the following three-letter symbols represents an amino acid that is polar and uncharged?
A)pro
B)gln
C)ala
D)asp
E)his

Question

Quizplus · Accepted Answer

The three-letter symbol "gln" represents the amino acid glutamine, which is polar and uncharged. The other options, proline (Pro), alanine (Ala), aspartic acid (Asp), and histidine (His), are either nonpolar, charged, or have unique properties that make them different from a typical polar, uncharged amino acid.

Which of the Following Three-Letter Symbols Represents an Amino Acid